var msg=["userName","mail","qq","phoneNumber"];
var stdin = process.stdin;
var index = 0;
var infor = [];
console.log(msg[0]+":");
stdin.on("data",function(chunk){
    var str = chunk.toString("utf-8");
    infor[index] = str;
    index++;
    if(index == 4){
        console.log(infor);
        process.exit;
    }
    console.log(msg[index]+":");

})